Description

ABB DSQC655 Ultracap Unit

Configured for short-duration energy storage and controller power-failure support in the ABB IRC5 system, the ABB DSQC655 (3HAC025562-001) (DSQC 655 Ultracap Unit) provides direct electrical energy storage for controller power-management functions.

Hardware Specifications

Parameter	Specification
Model	DSQC655
Full Part Number	3HAC025562-001
Brand	ABB
Component Type	Ultracap Unit / Capacitor Unit
ABB Type Designation	DSQC 655 / Ultracap
Compatible Controller	ABB IRC5
Operating Voltage	24 VDC
Weight	0.42 kg
Dimensions	185 mm x 65 mm x 60 mm
Estimated Shipping Size	186 mm x 61 mm x 60 mm
Storage Temperature	-40 deg C to +85 deg C
Power Consumption	Not specified; operates as an energy-storage component
Certifications	CE, ISO 9001
Manufacturer	ABB

Industrial Controller and Power-Management Characteristics

The DSQC655 stores electrical energy for controller power-management functions within the IRC5 platform. During an input power interruption, the stored energy can support short-duration controller functions associated with power-failure handling and controlled shutdown behavior.

The unit operates at a nominal 24 VDC interface level. Therefore, installation should maintain the specified controller wiring arrangement and polarity.

ABB industrial controller architecture also requires compatibility between the installed hardware, controller configuration, and system firmware. However, the supplied data does not define a firmware revision requirement for DSQC655.

The supplied specifications identify the unit as an Ultracap or capacitor unit rather than a conventional regulated power supply. Consequently, it should not be treated as a general-purpose 24 VDC supply for external loads.

Frequently Asked Questions (FAQ)

Q: Is the DSQC655 a conventional 24 VDC power supply?
A: No. The DSQC655 is specified as an Ultracap or capacitor unit that stores electrical energy for controller power-management functions.

Q: What controller platform is associated with DSQC655?
A: The supplied information identifies the ABB IRC5 controller as the compatible controller platform.

Q: Can the DSQC655 be connected as an external 24 VDC power source?
A: No such application is specified in the supplied data. The unit should remain within its designated ABB controller installation.

Field Installation Guidelines

• Disconnect controller power before removing or installing the DSQC655.
• Verify the part number and physical connector arrangement before installation.
• Maintain correct electrical polarity and use the original controller wiring configuration.
• Secure the unit mechanically to prevent movement or connector stress.
• Keep the module away from unauthorized external loads or modified power circuits.
• Inspect connectors and terminals for contamination, mechanical damage, or loose connections.
• Follow ABB IRC5 service documentation for controller-specific replacement and commissioning procedures.
• After installation, verify controller power-up behavior and power-failure handling according to the applicable maintenance procedure.

Specifications

• Brand: ABB

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems